* synchronous counting and asynchronous presetting. The preset feature allows the ’AC191 to be used in programmable dividers. The Count Enable input, the Terminal Count output and the Ripple Clock output make possible a variety of methods of implementing multistage counters. In the counting modes, sta
54AC191
National Semiconductor
229.28 KB
Up/down counter.
www.DataSheet4U.com 54AC191 Up/Down Counter with Preset and Ripple Clock July 1998 54AC191 Up/Down Counter with Preset and Ripple Clock General Des.
📁 Related Datasheet
54AC10 Triple 3-Input NAND Gate (National Semiconductor)
54AC109 Dual JK Positive Edge-Triggered Flip-Flop (National Semiconductor)
54AC11 Triple 3-Input AND Gate (National Semiconductor)
54AC11002 QUADRUPLE 2-INPUT POSITIVE-NOR GATES (Texas Instruments)
54AC11010 TRIPLE 3-INPUT POSITIVE-NAND GATES (Texas Instruments)
54AC11011 TRIPLE 3-INPUT POSITIVE-AND GATES (Texas Instruments)
54AC11021 Dual 4-Input Positive-AND Gates (Texas Instruments)
54AC11027 TRIPLE 3-INPUT POSITIVE-NOR GATES (Texas Instruments)
54AC11030 8-Input Positive-NAND Gates (Texas Instruments)
54AC11034 HEX NONINVERTERS (Texas Instruments)
